Electric terminal contact.



W. F. KHLELL.

Ell 'ILI TERMINAL UONTAGT.

A2. a 'uATION mun u11111.31, 19.11.

1,001,558 Patented Aug.22, 1911.

Fi i

Fi i 5 WITNESSES: INVENTUR aokwcmw W WILLIAM EDWIN RUSSELL, OF DANBURY, CONNECTICUT.

ELECTRIC TERMINAL CONTACT.

morass.

Specification of Letters Patent.

Patented Aug. 22, 1911.

Application filed January 31, 1911. Serial No. 605,796.

will enable others skilled in the art to which it appertains to main and use the same.

My invention relates to certain new and useful improvements in electric terminal contacts, and has for its object to secure the electrical conductor to the contact post in such manner that not only is the conductor firmly anchored to the post, but the removable contact cap is invariably in firm electri cal contact with both the conductor and the post, and with these ends in view my invention consists in certain details ol construction and combination of parts hereina'tter fully described and then particularly pointed out in the claim which concludes this description.

In the accompanying drawing Figure 11. is an elevation of the completed contact terminal l ig. 2 an elevation with the core tact cap renroved-lfiig. 3 a sectional elevation of the cap llig. i a sectional elevation ol the post-ll"ig. 5 an elevation showing the wire in erted within the post preparatory to linal connection therewith, and. Fig. l} a :tront view ot the post with the electrical crimdimtor secured thereto.

lllianilar numerals of reference denote like parts in the several .llgures ot the drawin 1 is a post made oil. any suitable conducting material with a perforation 2 extending lherethrough from end to end. From the outer face oi this post on opposite sides of. the axial. line of said perforation extend spaced contact lingers 3 whose outer srn'faces are rounded and threaded as shown at l, and at their bases these lingers are slightly recessed as shown at 5, tor the purpose presently to be explained.

6 is the contact cap which recessed in any suitable manner as shown at T and, is provided with a threaded portion 8 adapted to engage the threads l on the lingers 3 so that the cap may be lirmly secured to the post 1. The lower wall of this recess 7 is chani'tered as shown at 9, for the pi'irposc presently to be explained.

10 is the electrical conductor of the usual insulated form and at Fig. 5 I have shown a portion of this conductor stripped of the insulation and inserted through the post 1. preparatory to being properly jconmactcd therewith, and this stripped portion is designated by the numeral 11.

After the parts have been assembled as shown at Fig. 5, the portion Ill is wound around one ol the lingers 3 at its base within the recessed portion 5, this wimling bc ing ell'ccled by passing the portion it around the outside ol' the linger and thence within the space between the lingers, any surplus wire being then cut oll'. this winding being more particularly shown at Figs. 2 and l The cap (5 is lhcu driven on these lingers, and the chaml ercd porlion 9 will bind lirmly against the bare wire ll, while the cap ilscll will seat firmly against the post, thus making a most excellent contact. liy winding the wire in the manner aloresaid it is lirmly anchored lo the post and cannotbe pulled thciclrom, and the post with the conductor thus councclcd therewith may be utilized in connection with any suitable contact cap so long as the lallcr is so constructed that il binds lirmly against both the wire and post.

.l have illustrated in the drawing a conventional form of conlacl cap but my invcnlion is not limited to [he employment ol any special form ol cap so long as it contacts lirmly against the wirc and post.

in the drawings l have shown the wire ll. wound around only one ol. the lingers, since this is sullioient for all practical purposes, but it 0'] course will be uudcrstoml that this wire may be wound around bolh ol these lingers in any suilable aml apm'oved manner and i, do not wish lo be limited in this respect.

laying thus described my invention what i claim as new and desire to secure by Let lcrs lalcnt is:--

The combination of the post having a perforation therethrough lengthwise thereol and provided with cxlcriorly threaded spaced lingers that exlcnd lrom one end oil the post parallel with said pcrl'oration and on opposite sides of the plane lhcreol', an insulated comluctor wire passed through said perforation and having a stripped end which 'n'ojects through said perforation between said lingers and then has a winding contact with the lower portion of the latter, In testimony whereof I afiix my signature and a suitabe contact cap provided with g in presence of two Witnesses.

recess cham ered near its outer end an having a threaded portion adapted to 'en- WILLIAM EDWIN L 5 gage the threaded fingers whereby said cap WVitnesses: v

may be driven firmly against said Wire and MARGARET L. FEELEY,

post. EDMUND RIELEss. 

